Vibrator



Dec. 29, 1936. E. J. MAsTNEY .VIBRATOR Filed May 28, 1936 Ilan aff/XW: f

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Patented Dec. 29, 1936 UNITED STATES PATENT ori-ics VIBRATOR y Edward J. Mastney, Berwyn, Ill., assignor to Oak Manufacturing Company, Chicago, Ill., a corporation of Illinois Application May 2s, 193e, serial No. 82.275

1o claims. (cieco- 90) Y mary and secondarycircuits are effectively isolated from each other.v Referring to the drawing:

Figure 1 is a sectional elevation on line I-l of Figure 2 showing a vibrator.

Figure 2 is an elevation at right angles to Figure 1. I Figure 3 is a view of the reed.

Figure 4 is a detail of the reed with a part cut away.

Figure 5 is a section on 5-5 of Figure 3.

The vibrator comprises a U-shaped frame i having a bight 2 and arms 3 and 4. These arms extend parallel to each other and are bent inwardly at portions 5 and 6 and then extend out parallel at the ends 1 and 8. Staked at bight 2 lis a pole piece 9 of iron over which a magnetizing coil I0 is disposed.v Coil I0 has insulating discs Il and l2 at the ends thereof and is surrounded by an insulating cover I3. Magnetic plates I4 and I5 are disposed at each end of the coil. The coil assembly is maintained tightly in position by bending pole tip I6 transversely. l

Between the arms 1 and 8 of the frame which is preferably although not necessarily of magnetic material a stack supporting the various contacts and reed is disposed. 'I'his stack comprises spacing plates I1, an insulating plate I8, stationary contact supporting strips (two on each side), another insulating plate 20, additional spacing 4plates 2l, `a reed 22, all bolted together between arms 1- and 8 by a pair of bolts 2l and nuts26. It is understood, of course, that bolts 25 are insulatingly spaced from the various metallic members by` means of insulating bushings in a manner well known in the art.

Contact supporting members I9 each carry contacts 38 and 3l. Reed 22 is divided into two portions 32 and 33 suitably apertured at 34 and 35 to accommodate bolts 25. Portions 32 and 33 extend upwardly and at their free ends are carrying members similar to 44 showing that a joined together by mica bridges 36 and a metal armature 31 on one side and a. metal bridge 38 on the other side.

Itwill be noted that bridge 38 is the same as armature 31 except that it is reversed. The curved side 38 is on top of the bridge. In this way, bridge 38 may be of iron without substantially affecting the magnetic interaction between armature 31 and pole piece I6. As shown in Figure 4, the ends of reed sections 32 and 33 are 10 provided withV enlarged apertures. Mica bridges 36, one on each side of the reed, have smaller apertures concentric with the reed apertures through which rivets. 39 and 40 pass. In this way, the reed ends are rigidly maintained'to- 15 gether in insulating relation. Reed sections 32 and 33 have riveted thereto at points 4I and .42 contact carrying members 43 and 44 on one side thereof. On the other side are contact description of members 43 and 44 will suilice.

Contact member 43 extends outwardly from the reed at its midpoint with the free end 45 bent substantially parallel to the reed. This end 45 carries la movable contact 46 of some contact 25 material such as tungsten. From the bottom portion of member 43 an arm 41 extends upwardly between the two reed sections. Beneath arm 41 reed Asection 32 has a.' spring arm 48 extending therefrom and terminating in a 30 driving contact 49.

Contact member 44 has its middle portion extending outwardly from the reed with the end 50 bent parallel to the reed and carrying a movable contact 5I. Movable contacts 52 and 53 on 35 `the opposite side of the reed are similar to contact member 44.

Carried by arm 3 ofthe frame is a screw 55 adapted to4 be adjusted by a nut 56 and carrying at its end a contact 51 bearing against 40 driving contact 49.

The entire vibrator structure is supported in a soft rubber base 50 of a generally cup shape and provided at vthe bottom with a. ange 6I and a skirt v62. Depending from the bottom 63 45 of the rubber member and within skirt 62 are a plurality of tubular rubber members 64 through which are threaded the various wires from the contactsand driving coil. These wires are soldered to pins 65 rigidly mounted in a flat,V 50 round disc 66 of some insulating material. Fitted over the top of the vibrator structure is a rubber c ap 61 having-alpair of wings 68 extending from opposite sides thereof and adapted to almost touch the wall of a can 69. Can 69 55 of the can. As shown in Figure 1 the entire vibrator is disposed inside of the can and insulating disc '66 is adapted to fit against groove 10 of the can. Skirt 62 of the rubber base has an outwardly extending lip 12 which is adapted to be caught under groove 10. A spring wire 13 is disposed below disc 66 and the free edge 1l of the can is turned over to retain the assembly in position.

The magnetizing coil is connected through driving contacts 51 and 49 so that reed vibration will occur whenthe magnetizing coil circuit is energized.

What I claim is:

l. In a vibrator, the combination of an elongated frame, a magnetizable core carried by said frame at one end thereof, a composite reed rigidly clamped at the other end of said frame and extending toward said core, said composite reed comprising two spring sections spaced from each other and lying in one plane, an amature, means for rigidly and insulatingly mounting said armature on the free endsv of said reed sections, at least one elongated rigid member carried by each reed section near the clamped portion thereof and extending away from said reed and toward said armature, a movable contact carried by each rigid member at the free end thereof, stationary contacts cooperating with -said movable contacts, and means for mounting said stationary contacts on said frame.

2. In a vibrator, the combination of an elongated frame, a magnetizable core carried by said frame at one end thereof, a composite reed rigidly clamped at the other end of said frame and extending toward said core, said composite reed comprising two spring sections spaced apart from each other and lying in one plane, an armature, insulating material between said armature and said reed sections, means for rigidly mounting said armature and insulating material on the free ends of said reed sections whereby said reed sections and armature oscillate as a unitary reed structure, at' least one elongated rigid member carried by each reed section near the clamped portion thereof and extending away from said reed and toward said armature, a movable contact carried by each rigid member at the free end thereof, stationary contacts cooperating with said movable contacts, and means for mounting said stationary contacts on said frame.

3. In a vibrator, the combination of an elongated frame, a magnetizable core carried by said frame at one end thereof, a composite reed rigidly clamped at the other end of said frame and extending toward said core, said composite reed comprising two spring sections spaced from each other and lying in one plane, an amature, means for rigidly and insulatingly mounting said armature on the free ends of said reed sections to bridge the same, rigid members mounted on each side of each reed section and extending outwardly from said need sections in the general direction of the free ends of said sections, contacts carried by the free ends of said rigid members, stationary contacts cooperating with said movable contacts, and means, for mounting said stationary Vcontacts on said frame.

4. In a vibrator, the combination of an elon- 1 gated frame, a magnetizable core carried by said frame at one end thereof, a magnetizlng coil has a groove 10 formed therein near the end` -leaving a small cylindrical portion 1| at the end carried by said core, a composite reed comprising two spring sections spaced Lfrom each other and lying in one plane rigidly clamped at one end of said sections at the other end of said frame and extending toward said core, one of said reed sections having a separate spring arm integral therewith, an armature, means for rigidly and insulatingly mounting said armature on the free ends of said reed sections to bridge the same, movable contacts carried by each reed section and by said spring arm, stationary contacts cooperating with said movable contacts, and means for mounting said stationary contacts on the said frame.

5. In a vibrator, the combination of an elongated frame, a magnetizable core carried by said frame at one end thereof, a composite reed rigidly clamped at the other end of said frame and extending toward said core, said composite reed comprising two spring sections laterally spaced from each other lying in the same plane with their free ends in line with each other, a pair of magnetizable members disposed on opposite sides of the free ends of said bridge members, one of said members having a substantially straight edge in proximity to the free edge of said reed sections and serving as an armature, said other magnetizable bridge member being concave at the free reed edge, insulating members disposed on opposite sides of said reed ends and separating said bridge members from said reed, means for rigidly maintaining said bridge members, insulating strips and reed ends as a rigid structure, contacts carried by said reed sections and stationary contacts cooperating therewith mounted on said frame.

6. The structure of claim 5 wherein said bridge members are of the same shape having a substantially straight side, edge and a concave edge on the opposite sides thereof with said members reversed relative to each other.

7. In a vibrator a U-shaped frame having arms long in comparison to the bight, a magnetizable core carried by said bight at one end of said core and extending toward the open arms of said frame, a magnetizable coil surrounding said core, a pair of reeds rigidly and insulatingly clamped at one end between said arms and extending toward said core, said two reeds lying in one plane and having their adjacent edges separated, an armature bridging `said reeds at the free ends thereof, means for inslatingly mounting said armature on said reed ends, at least one elongated rigid member carried by each reed section near the clamped portion thereof and extending away from said reed and toward said armature, a movable contact carried by each rigid member at the free end thereof, and stationary contacts mounted on said frame and cooperating with said movable contacts.

8. I'he structure of claim 7 wherein said armature has the side remote from said core cut in to form a concave curve and wherein the same armature member is disposed in reversed relationship on the other side of said reed ends to form a rigid unitary construction.

9. In a vibrator the combination of an elongated frame, a magnetizable core carried by said frame at one end thereof, a magnetizing coil on said core, a composite reed rigidly clamped at the other end of said frame and extending toward said core, said composite reed comprising two spring sections spaced apart from each other and lying in one plane, an armature,

insulating material between said amature and 75 said reed sections, means for rigidly mounting said armature and insulating material on the free ends of said reed sections, at least one elongated rigid member carried by each reed section near the clamped portion thereof and extending away from said reed and toward said armature, one of said spring sections having a lateral extension forming a separate spring section, the rigid member overlying said one spring section having an extension overlying said spring extension but leaving the portion adjacent the free end exposed, contacts carried by the free ends of the rigid members, a, contact mounted on the free end of the spring extension, stationary contacts cooperating with said movable contacts, means for mounting said stationary contacts on said frame, and connections from said coil to said contact mounted on' said spring extension whereby on energization of said coil circuit, reed oscillations are created.

10. In a vibrator, the combination of an elongated frame, a magnetizabie core carried by said frame at one end thereof, a magnetizing coil on said core, a composite reed rigidly clamped at the other end of said frame and extending upward toward said core, said composite reed comprising two spring sections, spaced apart from each. other and lying in one plane, an armature, insulating material between said armature and reed sections, means for mounting said armature and insulating material on the free ends of said reed sections, one of said reed sections having a lateral extension forming a separate spring section extending toward the armature, a. rigid abutment carried by said one spring section and overlying a portion of the spring extension but lea-ving a portion near the end uncovered, contacts mounted on the reed sections and on the exposed portion of the spring extension, stationary contacts, means for mounting said contacts on the trame, and connections from said coil to said spring extension contact for maintaining said reed in vibration upon circuit energizaton.

EDWARD J. MAS'INEY. 

